Composition of matter for treating hides and skins



Patented Aug. 7, 1928.

rEn s re N 0 Drawing.

of bacteria, preserve and cure hide and skin substance, destroy disease germs, and set the gelatinous substance so it will not run off the hide or skin.

Hide and skin substance consists of animal flesh on one side and grain on the other side held together by fibers similar to fine threads.

These fibers are inlaid in a gelatinous sub-. stance. The object in conditioning hides and skins for the purpose of being tanned into leather is to set the gelatinous substance more solid at the same time not allow it to run out or be forced out, and when the hide or skin is subjected to a composition, in accordance with this invention, more of this gelatinous substance willbe held in the hide or skin than heretofore, so when cured the hide or skin will have more substance, more.

gelatin, and more weight resulting when tanned into leather in'a higher quality or rating in the market, than would be the case if the hides and skins were cured in salt as in accordance with the method now generally used.

When the composition of matter, in accordance with this invention, is employed for preservative purposes, it is rubbed,in a dry state, on the flesh side of the hide or skin, and for curing purposes water is added to the composition and the skin subjected to a bath formed by the water and the several ingredients of the composition, before or prior to tanning. The hides or skins can i also be disinfected by spraying or immersion.

The ingredients of a composition of matter,

in accordance with this invention, consist of formaldehyde, nitre, bicarbonate of soda and sulphate of sodium. The proportions of the several ingredients, when the composition is employed for treating one thousand pounds of hides or skins, consist of formaldehyde one-eighth of a pound to twenty pounds; nitre from one HARRY DODGE, or DANVERS, MASSACHUSETTS.

COMPOSITION or IMATTER FOR TREATING HIDES AND SKINS.

v Application filed January 18, 1928. Serial No. 247,752.

lll nd: to forty pounds; bicarbonate of soda "f 1' from one pound to sixty pounds; sulphate of sodium from one-eigth of a pound to thirty pounds, according to the condition of the hides and skins.

When the composition is used dry the commercial strength thereof .is utilized, and when a bath is formed the requisite amount of water is admixed with the several ingredients of the composition and the strength of the bath will be according to the condition of the skins.

For preserving the hides and skins the ingredients are mixed together dry, in the desired. proportions, and thoroughly rubbed on the flesh side of the hides and skins. WVhen curing the ingredients are added to the water that the skins are placedin, before or prior to tanning, including the soak vat water. For disinfecting purposes the composition is sprayed on the hides and skins or these latter immersed in the composition.

One particular advantage of the com osition is that when it is employed for risinfecting purposes it prevents the spotting of the skin.

When the composition is used for curing, water is added to the composition to form a bath and the hides or skins are placed therein. When the hides or skins have absorbed enough of thissolution they are removed therefrom and stacked in a pile and allowed to lie until they have taken up all the solution possible by the pressing in piles and which probably will take from one week to six months to condition. The longer the time the skins or hides are allowed to lie in wet packs the. better they are conditioned.

When the skins taken from the animals are -to be dried and shipped, they are submitted to a composition of matter, in accordance with this invention before drying. When the skins are to be kept in a wet state, they are allowed to cool for five or six hours in order for the animal heat to leave them. The several ingredients of the composition are mixed together Without water and rubbed on the flesh side of the hide. The composition of matter will not only preserve the hides or Skins but will disinfect the same, as well as cure it and when the composition of matter, in accordance-with this invention, is used for treating the hides or skins the hides and skins will have more Substance, more gelatin, more weight which will result, when tanned into leather of a higher quality and a higher rating, than would be the case if the same skins had been treated by the salt now generally used.

What I claim is: v 6 1. A composition of matter for the treatment of hides and skins consisting of forlnaldehyde, nitre, bicarbonate of soda and sulphate of sodium. 7 y

2. A composition of matter for the treat- 10 ment of hides and skins consisting of from one-eighth of a pound to twenty pounds of formaldehyde, from one pound to forty pounds of nitre, from one pound to sixty pounds of bicarbonate of soda and from oneeighth of a pound to thirty pounds of sulphate of sodiuin. c

In testimony whereof, I afiix my signature hereto. i i

HARRYVDODGE. 

